Anyone use OBDII Splitter ? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Vick415 · 11-21-2014, 11:44 PM

I have two active OBDII devices that I want to plug in and wondering if PCM will spit out information on both at the same time...

Ex. http://www.amazon.com/Ultra-Low-Prof...8FE7A8CE0DJB7M

13FastBlkSS · 11-22-2014, 12:18 AM

According to some of the reviews about the example you posted, the splitter itself works but it will not allow both devices to work at the same time (display information, etc) i.e. signal interference.

sting808 · 11-22-2014, 01:31 AM

Quote:

Originally Posted by Vick415

I have two active OBDII devices that I want to plug in and wondering if PCM will spit out information on both at the same time...

Ex. http://www.amazon.com/Ultra-Low-Prof...8FE7A8CE0DJB7M

Yes. Depending on the polling rates on your devices , performance will vary. I use different splitters and extensions.

I've run a combination of
Dashtronix gauge + innovate OT-2 wifi
Dashtronix gauge + generic ELM327 wifi
Dashtronix gauge + Gopoint BT1a BT
Dashtronix gauge + HPT

However, I only upload tune files with a dedicated connection just to be safe.

Vick415 · 11-22-2014, 02:06 PM

Interesting ... I am using Dashlogic on a full time basis with several alarm parameters setup - however want to add another wifi OBD2 for external application. I have already emailed Dashlogic to see if their device support splitter...

Sent from my iPad using Tapatalk

Fab4Fun · 11-22-2014, 05:29 PM

Its more that the diagnostic network can't support more than one device. To the ECM, multiple test tools appear as one device. So if more that one device sends a request at the same time, it will only listen to the first device to send a response. If the timing of the two requests don't overlap then they could co-exist, however, the two test devices don't communicate so there's no way to guarantee that. The faster the devices poll for data, the more likely they are to overlap requests. So some slow devices may work ok together.

11-21-2014, 11:44 PM	#1
Vick415 Drives: 2014 ZL1 Join Date: Aug 2014 Location: SF Bay Area, California Posts: 180 View My Garage	Anyone use OBDII Splitter ? I have two active OBDII devices that I want to plug in and wondering if PCM will spit out information on both at the same time... Ex. http://www.amazon.com/Ultra-Low-Prof...8FE7A8CE0DJB7M

11-22-2014, 12:18 AM	#2
13FastBlkSS Drives: 2013 Camaro 2SS/RS M6 Join Date: Feb 2013 Location: So Cal Posts: 1,048	According to some of the reviews about the example you posted, the splitter itself works but it will not allow both devices to work at the same time (display information, etc) i.e. signal interference. __________________ 2013 Black / Black Camaro 2SS/RS M6 w/Magnuson TVS2300, ZL1 Fuelpump / ADM FPCM, NPP Exhaust, Cold Air Inductions CAI w/ Scoop, Elite Engineering Catch Can, VMAX Ported TB, OEM 1LE Front Splitter, AAC Ghosted Side Markers, Dropped on BMR Split Drop Springs Build#24869

11-22-2014, 02:06 PM	#4
Vick415 Drives: 2014 ZL1 Join Date: Aug 2014 Location: SF Bay Area, California Posts: 180 View My Garage	Interesting ... I am using Dashlogic on a full time basis with several alarm parameters setup - however want to add another wifi OBD2 for external application. I have already emailed Dashlogic to see if their device support splitter... Sent from my iPad using Tapatalk

11-22-2014, 05:29 PM	#5
Fab4Fun Drives: 2014 Camaro 1SS/RS/1LE 6M NPP Join Date: Jul 2014 Location: Ann Arbor, Michigan Posts: 65	Its more that the diagnostic network can't support more than one device. To the ECM, multiple test tools appear as one device. So if more that one device sends a request at the same time, it will only listen to the first device to send a response. If the timing of the two requests don't overlap then they could co-exist, however, the two test devices don't communicate so there's no way to guarantee that. The faster the devices poll for data, the more likely they are to overlap requests. So some slow devices may work ok together.